Mechanical behavior study of laminate composite by three-color digital holography

Abstract

Abstract A method for real time 3D measurements based on three-color digital holographic interferometry is presented and applied to the investigation of fracture mechanisms in laminate composite submitted to a three point flexural loading. A convolution algorithm allows the three monochrome images to be superposed to provide simultaneous full-field 3D measurements. Experimental results are presented and exploited to obtain the evolution of the crack tip propagation during the test.

Keywords

• Laminate composite
• Three-color digital holography
• Three point flexural loading
• Displacement measurement